Cyrus IMAP 2.4.19 Release Notes¶
- Complete backport of the new (2.5 and later) IMAP IDLE implementation (thanks Thomas Jarosh). This fixes a bunch of bugs and race conditions that were inherent to the older implementation 
- New option "imapidletimeout" overrides "timeout" specifically for connections in IDLE state 
- OpenSSL 1.1.0 is now supported 
- Fixed: imap ENABLED doesn't print * ENABLED when nothing new enabled 
- Fixed: mailbox lock management over rename (thanks Thomas Jarosh) 
- Fixed: added overflow protection to urlfetch range checks 
- Fixed: lmtpd can now deliver when mupdate server isn't available (thanks Michael Menge) 
- Fixed T227: service processes no longer divide by zero when invoked with -T 0 argument (thanks Ian Batten and Jens Erat) 
- Fixed T229: ctl_cyrusdb now uses database paths from imapd.conf (thanks Simon Matter) 
- Fixed bug #3862: mailbox database changes now rolled back on mupdate failure during rename (thanks Michael Menge) 
- Fixed: XFER to 2.5 and later no longer downgrades index to oldest version 
- Fixed: nonsensical "TEXT.MIME" section now handled as "HEADER" 
- Fixed: added missing 'auditlog: ' prefix to backend connections (thanks Wolfgang Breyha) 
- Fixed: IMAP SEARCH crash on some platforms 
- Fixed: memory leaks in IMAP SEARCH and IMAP APPEND 
- Fixed Issue #1967: EXISTS count reported earlier if fetching past size of previous message set